20.500.12556/DKUM-94621 Primerjalna analiza energetske učinkovitosti fotonapetostnega sistema z baterijskim hranilnikom v zimskem in poletnem obdobju magistrsko delo Comparative analysis of the energy efficiency of a photovoltaic system with a battery storage unit in winter and summer period Energija ima izjemno pomembno vlogo v današnji družbi, saj predstavlja pomemben dejavnik gospodarske rasti, tehnološkega napredka ter zagotavljanja varnosti in kakovosti življenja. Neprekinjena, zanesljiva in trajnostna oskrba z energijo je izziv, s katerim se danes soočajo tako razvite kot manj razvite države. Skladno s trendi zmanjševanja fosilnih virov energije in potrebami po varstvu okolja prihajajo v ospredje obnovljivi viri, med katerimi ima sončna energija ključno vlogo. Fotonapetostni sistemi, ki omogočajo pretvorbo sončne svetlobe v električno energijo, so nepogrešljiv del sodobnih stanovanjskih in industrijskih objektov, še posebej, če jih uporabljamo z baterijskim hranilnikom, ki zagotavlja hrambo energije za uporabo izven obdobij sončnega obsevanja. Takšna kombinacija omogoča večjo neodvisnost in učinkovitejšo izrabo lastne energije. Namen magistrskega dela je podrobna analiza energetske učinkovitosti fotonapetostnega sistema, ki vključuje baterijski hranilnik in električno vozilo. Analiza je osredotočena na realne pogoje samostojnega stanovanjskega objekta skozi zimsko in poletno obdobje. Uporabljeni so bili dejanski merilni podatki proizvodnje in porabe električne energije, stanje napolnjenosti baterije ter časovni potek moči baterijskega sistema, poleg tega pa tudi profil porabe električnega vozila in omrežja. S tem smo želeli predstaviti realno zgodbo delovanja sistema in zagotoviti verodostojen vpogled v njegovo delovanje v vsakodnevnih pogojih. Delo se zaključi z analizo učinkovitosti sistema ter oceno njegovih prednosti in slabosti. Glavna primerjava zimskega in poletnega dne je pokazala izrazite sezonske razlike. Takšna integracija fotonapetostnega sistema, baterijskega hranilnika in električnega vozila prispeva k boljši izrabi energije in večji energetski samozadostnosti. Kljub nekaterim omejitvam, kot je variabilnost profila porabe, ta celostni pristop predstavlja rešitev za zmanjšanje odvisnosti od tradicionalnih energetskih virov. V širšem kontekstu bodo obnovljivi viri energije igrali ključno vlogo pri prihodnjem izboljšanju in povečanju učinkovitosti energetskih sistemov. Njihova vključitev v pametna omrežja prinaša številne prednosti, kot so zmanjšanje emisij toplogrednih plinov, izboljšanje energetske varnosti, spodbujanje trajnosti in zanesljivosti sistema, tehnološki napredek ter boljša integracija in prilagodljivost omrežja. Ti trendi predstavljajo pomembno platformo za razvoj trajnostne in učinkovite energetske prihodnosti, kar bo omogočilo zmanjšanje odvisnosti od tradicionalnih virov in spodbudilo prehod k bolj zeleni in digitalizirani družbi. Energy plays an exceptionally important role in today's society, as it is a key factor in economic growth, technological advancement and ensuring safety and quality of life. Continuous, reliable and sustainable energy supply is a challenge faced by both developed and developing countries. In line with the trends of reducing fossil energy resources and environmental protection needs, renewable energy sources have come to the forefront, with solar energy playing a crucial role. Photovoltaic systems, which enable the conversion of sunlight into electrical energy, have become an indispensable part of modern residental and industrial buildings, especially when used in combination with battery storage systems that provide energy storage for use outside periods of sunlight. Such a combination allows greater independence and more efficient use of self-generated energy. The aim of this master's thesis is a detailed analysis of the energy efficiency of a photovoltaic system that includes a battery storage system and an electric vehicle. The analysis focuses on real conditions of an independent residental building throughout the winter and summer periods. Actual measured data on electricity production and consumption, battery charge state and the time course of the battery system power were used, along with consumption profiles for the electric vehicle and the grid. This approach was intended to present a realistic operational overview of the system and provide a credible insight into its daily functioning. The thesis concludes with an analysis of the system's efficiency and an evaluation of its advantages and disadvantages. The main comparison between a winter and a summer day revealed significant seasonal differences. The integration of the photovoltaic system, battery storage and electric vehicle contributes to better energy utilization and increased energy self-sufficiency. Despite some limitations, such as variability in consumption profiles, this holistic approach offers a variable solution for reducing dependence on traditional energy sources. In a broader context, renewable energy sources will play a key role in the future improvement and enhancement of energy system efficiency. Their integration into smart grids provides numerous benefits, including reduced greenhoues gas emissions, improved energy security, promotion of sustainability and system reliability, technological progress and better grid integration and flexibility. These trends represent an important platform for developing a sustainable and efficient energy future, enabling a reduction in reliance on traditional sources and fostering a transition towards a greener and more digitalized society. realni podatki sezonska primerjava fotovoltaika samostojni objekt real data seasonal comparison photovoltaics independent building true true false [J. Kalajanović] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-08-22 19:22:44 2025-12-19 15:05:33 2025-12-20 03:19:13 0000-00-00 00:00:00 2025 0 Maribor 0 Velenje XVIII, 69 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.9:621.311.243(043.2) 262378499 MAG_Kalajanovic_Jovana_2025.pdf MAG_Kalajanovic_Jovana_2025.pdf 1 EC53DE8B3B2E32359754BA99B81A4371 80cc379a1f0d6bd070757c3e2a8114c9bd5b6088aafe3e3901133e1f41d12c10 c89a1bb4-948e-11f0-9f40-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=198783 Fakulteta za energetiko 0 0 0